# WattShift vs Payelle

The clearest difference is rating: WattShift at 5.0 against Payelle's 4.3. WattShift also leads on in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 3 months). Payelle's advantage is ratings volume (12 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Payelle sells 2 in-app purchases, starting at $8.00 per month. WattShift asks for nothing beyond the download.

WattShift holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Payelle has 12 ratings behind it against 1, so its average is the more settled of the two.

WattShift ships an update every 3 weeks, Payelle every 3 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | WattShift | Payelle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wattshift/id6446374436/reviews)** | [4.3 (12 ratings)](https://appshunter.io/ios/app/payelle/id6752777168/reviews) |
| Number of ratings | 1 | **12** |
| Positive reviews | — | 90.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 27 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [WattShift, Inc.](https://appshunter.io/developer/1578777527) | [Payelle LLC](https://appshunter.io/developer/1840884331) |

## What reviewers say

### WattShift

[App page](https://appshunter.io/ios/app/wattshift/id6446374436)

This app intelligently manages your home thermostat to prioritize the use of renewable energy sources like solar and wind. It automatically shifts cooling and heating schedules to times when energy is cleaner and cheaper, potentially reducing your electricity bill by up to 30% without compromising comfort.

**Highlights:** Maximizes solar and wind energy use, Reduces electricity bills up to 30%, Maintains full comfort and temperature control, Syncs with smart home devices, Automatically shifts thermostat usage, Prioritizes cleaner energy sources

**In-app purchases:** none


### Payelle

[App page](https://appshunter.io/ios/app/payelle/id6752777168)

This app automatically selects the best rewards credit card for each purchase, simplifying checkout. It evaluates your cards based on merchant category and spend context, then completes payment with a single tap. Earn more rewards without the mental effort of comparing cards.

**Highlights:** Automatic card selection, One-tap payment, Rewards optimization, Privacy-focused design, Easy card syncing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Payelle - Monthly | $8.00 | per month |
| Payelle - Yearly | $72.00 | per year |


## Frequently asked questions

### Is WattShift free?

WattShift is free to download, with no in-app purchases.

### Is Payelle free?

Payelle is free to download, with in-app purchases available.

### Which has better reviews, WattShift or Payelle?

WattShift is rated higher. WattShift averages 5.0 out of 5 from 1 ratings, while Payelle averages 4.3 from 12 ratings.

### Do WattShift or Payelle have ads?

Neither WattShift nor Payelle shows ads.

### Which is updated more often, WattShift or Payelle?

WattShift ships an update every 3 weeks, and Payelle every 3 months. Most recently, WattShift was updated on October 1, 2026 and Payelle on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*